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Finding the Fourth Proportional to 1,296,605.02, 1,943,332.79 and 917,636.50

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Solution

The fourth proportional to 1,296,605.02, 1,943,332.79 and 917,636.50 is: 1,375,340.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,605.02 : 1,943,332.79 = 917,636.50 : x
  2. Step 2: Convert to fraction form
    1,296,605.02/1,943,332.79 = 917,636.50/x
  3. Step 3: Cross multiply
    1,296,605.02x = 1,943,332.79 × 917,636.50
  4. Step 4: Simplify right side
    1,296,605.02x = 1,783,273,099,750.84
  5. Step 5: Solve for x
    x = 1,783,273,099,750.84/1,296,605.02
  6. Step 6: Final answer
    x = 1,375,340.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.